Pl help me with these kind of sums and kindly explain in detail the method of how can we get to know that they are in series or parallel ?? Q in attachment . pl pl pl help me out !!!

Dear student

 

Two elements are in series if they are one after another. There is only one path, so, if you follow the wire, you will find the first element and then the second element. ...
On the other hand, two elements are in parallel when each element is in a different branch of the circuit.